As to levitations without contact, we discovered a method of proceeding that renders their success easier. The chain, formed a few millimetres above the top disk, is arranged so as to go in the direction in which the movement is to take place; the hands the nearest to the leg called on to rise are outside of and beyond the top; they draw near and pass gradually by, while the hands that are opposite, and which had at first advanced toward the same leg, move away from it while they attract it. It is during this progression of the chain, while all our wills are fixed upon a particular spot on the wood, and when the orders to levitate are forcibly given, that the foot quits the ground and the table-top follows the hands,--to the point of upsetting, if one did not keep hold of it. This levitation without contact was produced about thirty times. We produced it by each of the three legs in succession, in order to remove every pretext for criticism. Moreover, we watched the hands with scrupulous care. If the reader will please observe that this surveillance was exercised during thirty operations without detecting the slightest contact, I think it will be concluded that the reality is henceforth placed beyond all doubt. _Seance of November 21_ The chief characteristic of this seance was the absence of that one of our number who exercised the greatest authority at the table.[52] In working without her we were put in a position to establish two things: first, that one cannot with impunity do without an extraordinary gifted experimenter; and, second, that one can, nevertheless, do without him or her, if it is absolutely necessary, and that success, although less brilliant in this case, is not impossible. I call special attention to this last point, as well as to the frequent modifications of our personnel, for the benefit of suspicious persons who, not knowing the mental worth of the persons in question, might be disposed to place to the account of their dexterity the results to which they essentially contribute. The psycho-physical working power of a "sensitive" table-turner is of a mixed nature: a resolute posture and a circular movement are not sufficient to give birth to it. Besides this, and above all, there is needed _the will_. Our will having at last asserted itself, and muscular pressure having yielded its place to the pressure of commands, the fluidic rotation arrives, after five or six minutes of concentration of our thoughts. We felt, indeed, keenly that some important person was lacking and that we did not possess our usual power. However, we were determined to succeed, even at the price of greater mental fatigue.